⚠ Version 1 of The Plant List has been superseded.
This name record (from Tropicos) is not included in version 1.1 of The Plant List. It is possible the same name is included from a different data source, to check this you can search for Cynanchum sibiricum in version 1.1 of The Plant List.
This name is a synonym of Cynanchum thesioides .
The record derives from Tropicos which reports it as a synonym (record 2610814
) with original publication details: Trudy Imp. S.-Peterburgsk. Bot. Sada 25(1): 291-292 291 1905.